Fuse-plug.



W. o. BESAW.

FUSE PLUG.

APPLlcATmN FILED AuG.2e, 1915.

Patented Sept. 1l, 1917.

Whesses VU. Q. ESAW WILLIE o. BnsAw, or BEEDLEY, CALIFORNIA.

FUSE-PLUG. x

Specification of Letters Patent. Patented Sept. 11, 1917.

Application filed August 26, 1915. Serial No. 47,477.

To aTZ whom it may concern:

Be it lmown that I, WILLIE O. BEsAW, a citizen of the United States, residing at Reedley, in the county of Fresno, State of California, have invented certain new and useful Improvements in Fuse-Plugs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. v

This invention relates Ato new and useful improvements in fuse plugs.

An object of the invention resides in the provision of a. plug in which a plurality of fusible strips are provided so that when one is fused by an'over load on the circuit in` which the plug is interpolated, another may be swung into position to complete the cir- Cuit.

A further object of the invention resides in so constructing the device that the operation of swinging one of the fusible strips to complete the circuit after another of the strips has been fused will be exceedinglysimple.

lVith these and other objects in view such as will appear as my description progresses, my invention comprises the combination and arrangement of parts as set forth in and falling within the scope of the appended claim.

In the Adrawings Figure 1 is a s/ide elevation of my device. f

Fig. 2 is a Vertical sectional view.

Fig. Sis a top plan view, and

Fig. 4 is a fragmental detail.

Referring tothe drawings vwherein likey parts are indicated by like characters throughout the several views.

In the embodimentl of my invention shown inthe drawing I have provided a porcelain body portion 1 from which extends an integral shank 2 which has a metallic threaded casing 3.l The body portion 1 is provided with a chamber 4 in its face.

through the body portion 1 is a conductor 5 Y has its other end terminating in the chamber which is connected at .6 to the casing. 3 and 4. Extending through the body portion and the shank 2 is a bolt 7 having a head 8 on one end thereof which acts asa contact and havin a head 9 on the other end thereof which is coated in the chamber 4. Secured to and extending from the upper end of the bolt-in Extending lengage the conductor 5. Interposed between these strips 10 and the head 9'of the bolt is a cover plate 11 which is made of mica or other suitable {ire-proof material and is held in place by lugs 12 which` are bent from a metallic band 13 which band encircles the body portion of the plug.

When the plug is interpolated in the circuit 'and an overload is thrown upon the circuit the fusiblestrip which is in contact with the conductor 5 will be fused and the circuit broken. It is then only necessary to turn the bolt 7 until the next fusible strip 10 'engages the conductor 5 at which time the circuit will again be completed. This operation may be carried out until all of the fusible strips have been used.

It will thus be seen that I have provided a very simple fuse plug which will not be expensive to manufacture and which will be very economical in use because of the fact that it may be used to complete a circuit a plurality of times.

While I have illustrated and described a particular embodiment of my invention it has merely been for the sake of convenience and Ido not wishto be limited to thatparticular embodiment as it is obvious that numerous changes may be made in the details of construction without departing from the spirit of the invention or exceeding the scope of the claim.

What I claim is:

In a fuse plug, the combination with a body portion having'a metallic casing, of a band encircling one end of the body portion and forming a chamber, a conductor extending through said bodv portion from the casing into the chamber, a bolt rotatably extending through the body portion into the chamber, a plurality of fusible strips extending from the bolt and arranged to bear, successively, against the conductor and a cover plate secured within the chamber and bearing against the fusible strips.

In testimony whereof, I aix my signature. in the presence of two witnesses.

WILLIE O. BESAW.

lsi'itnesses B. BERGsHoLD, M. C. OLDHAM. 

